Shocking! Earthquakes reveal new layer in Earth's core-the HIDDEN 5th layer | Tech News

Shocking! Earthquakes reveal new layer in Earth's core-the HIDDEN 5th layer

Apart from the existing four layers of Earth, there is a possibility of a new fifth layer. Read more to know what the new study revealed.

By: HT TECH
| Updated on: Feb 27 2023, 22:24 IST
6 TERRIFYING solar storms that blasted Earth in 2022
Earth
1/6 On June 29, a surprise solar storm struck the Earth. The solar storm was not caused by coronal mass ejections (CME) but by a corotating interaction region (CIR), which opened a hole in the Earth's magnetosphere. It was a G1-class solar storm which is capable of causing shortwave radio blackouts and GPS disruptions. Interestingly, it coincided with the rare five planet alignment event.  (NASA)
Earth
2/6 Extremely rare pink auroras could be seen on November 3 near Greenland, after a G1-class solar storm slammed into the Earth. Solar storms usually give a greenish hue due to ionizing of Oxygen atoms. However, the CME in this case was able to reach the lower strata of the atmosphere which ionized Nitrogen atoms and gave off the rare pink aura.  (Representative Photo) (Pixabay)
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3/6 On November 6, a powerful solar flare which was estimated to be an X-class solar flare caused temporary radio blackouts in Australia and New Zealand. The resultant solar storm blocked all high frequency radio waves making it hard for various emergency services and airlines that use radio communications to operate for multiple hours.  (Pixabay)
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4/6 On August 7 and 8, a mysterious phenomenon was seen after a solar storm strike which scientists call STEVE (strong thermal emission velocity enhancement). A gigantic ribbon of purple light followed by a wave of green light could be seen in many parts of North America.   (@KaniskiDylan / Twitter)
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5/6 A rare double solar storm attack was seen on March 14 when a G2-class solar storm was quickly followed up with another G1-class solar storm. Scientists believe that such multiple solar storm attacks are going to be more frequent in coming days as the Sun reaches the peak of its solar cycle. (Pixabay)
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6/6 On October 25, the Sun seemed to beam a smile at Earth even as it spewed a stream of dangerous solar particles towards our planet. Multiple dark regions popped up on the Sun that gave an uncanny impression of a smiley face. The resultant solar storm from the event was noted to be a G2-class which is so strong that it is capable of causing fluctuations in electricity grids on Earth.  (SDO/AIA)
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The new study suggested that Earth has five layers. (Pixabay)

So far, we have all read about the Earth having four layers – the crust, the mantle, the outer core, and the inner core. Shockingly, it has now been revealed that there may well be 5th layer. New insights about the deepest parts of Earth's inner core have been unveiled through seismic waves produced by earthquakes, which have been studied by a team of researchers from the Australian National University and published in the journal Nature Communications.

Scientists examined how seismic waves travel through the Earth's inner core, and they believe this has provided evidence of a distinct layer within it, called the innermost inner core. They conducted their analysis using data from over 200 earthquakes with a magnitude of 6 or greater that occurred in the past decade. According to the researchers, "Earth's inner core (IC), which accounts for less than 1% of the Earth's volume, is a time capsule of our planet's history."

A NEW layer of Earth

According to a study published in the journal Nature Communications, there is a new layer in the Earth's inner core that takes the form of a solid, metallic sphere situated at the core's center. It is not molten, it is solid. This research emphasizes the importance of exploring Earth's center in order to gain insights into the formation and evolution of planets.

In the study, the researchers examined the anisotropy of the iron-nickel alloy that makes up the Earth's inner core. Anisotropy refers to the variation in seismic wave speed through the material of the inner core, which depends on the direction of wave travel. The researchers found that seismic waves were bouncing at various angles near the Earth's center repeatedly.

By examining the variation in travel times of seismic waves caused by different earthquakes, the team discovered that the crystalline structure in the innermost region of the Earth's inner core is distinct from that of the outer layer. The researchers suggest that a significant global event during the Earth's evolution may have caused a notable alteration in the crystal structure of the inner core.

These new findings suggest the presence of a fifth layer beneath the inner core.

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First Published Date: 27 Feb, 22:24 IST
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